Wooden bird houses can come pre-painted with primer. This can allow you to add up to your ideal design so you can paint it with your desired color after. There are also other variations in the materials used in modern bird houses. You can get several other pre-built homes for your feathered friends, some of them are building with plaster, ceramic, plastic and metal. Having them coming back to the bird house on a regular basis is an achievement in itself. And seeing them on their backyards everyday is another source of joy. Most humming bird houses are small like the birds themselves. In fact, they are made so small that you will not be able to see them the first time if you are not looking close enough. They do not mingle with the ordinary birds and they are not used to staying in one place because these man-made birdhouses are easily coveted by the other domineering kinds of birds. It is a common scenario that bluebirds are typically spotted in the farmlands and pastures. When you are considering the option of constructing a bluebird birdhouse, it is important that you familiarize yourself with the patterns of their migrating and nesting. The birdhouse for your pets must be cool during the summer yet warm during the winter. When it comes to designing the birdhouse for your beloved pets, how you design it lies in your own discretion. There are several kinds of birdhouses that are available in the stores. If you intend to construct the birdhouse manually, you could opt for a design to fit into it. You will find that there are many websites that cater to providing you with free patterns for bird house building. The only problem you will encounter using this method is the difficulty in choosing what pattern to use. The many patterns presented to you will make your decision hard. It is best to base everything on the location you will build it and the kind of birds that you want to have in the bird house. A bird house will shield birds from harsh environments such as strong or heavy winds and storms. Among the primary purpose of bird houses is to protect a bird from their natural predators such as cats and snakes. Birds' nests may also have these pests that destroy the eggs before they hatch. Now, most bird houses are equipped with devices that can avoid these pests from ever coming to your birds' nest.